What does Reset(BarcodeScanner) reset it to?

[stapes]

My Barcode Scanner control has the following properties:

Reset: false

OnScan: false

It is linked to a Text Input control named txtQrCode2, with the following property:

Default: BarcodeScanner4.

I have added a Cancel Icon to reset this value.

In that Icon's OnSelect property, I have tried numerous approaches, all without success.

Reset(BarcodeScanner) appears to clear the text field, but it is not seen as empty here:

Filter(FinishedGoodsMaster,  (SearchInput_2.Text in stDescLine1) , (SearchInput_2.Text in stCodeParent) ,
(txtQrCode2.Text in stCodeParent))

So when I scan a value, the gallery displays the correct item, but when I Reset the BarcodeScanner control, the Gallery shows nothing. It should show everything - if it was truly empty - which is what happens if I manually delete the value.

[Anonymous · Accepted solution]

Reset(BarcodeScanner) will set BarcodeScanner.Value to Blank(). You can test this by adding this formula to a label

BarcodeScanner.Value = Blank()

Which will return true after you reset the BarcodeScanner control. Try using BarcodeScanner.Value instead of just BarcodeScanner and see if that fixes it. 

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[stapes]

Brilliant. I changed the Default property of my Text Input field to this:

If(IsBlank(BarcodeScanner4.Value),"",BarcodeScanner4.Value)

All now works!

[Hameri]

any idea why .Value is not recognized in German?

[JuiceThuper]

Are you trying to set the value of the barcode scanner to Blank()?

That is not the way to set the value of a variable or control in Power Apps.  This box expects you to use a function/operation, but you are performing an evaluation.  It is evaluating whether BarcodeReader1.Value is equal to Blank() - which will return true or false.  In fact, you cannot 'Set' any control values this way.

The way you should be able to set the BarcodeReader to Blank would be Reset(BarcodeReader1) as described above.